TMP88CS38FG datasheet(31/226 Pages) TOSHIBA

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TMP88CS38/CM38A/CP38A

2007-09-12

88CS38-31

Table 1.5.2 External Interrupts

Source

Secondary

Function Pin

Enable Conditions

Edge

Digital Noise Rejection

INT0

P50/TC2/ PWM8

IMF

= 1, INT0EN = 1, EF3 = 1

Falling edge

Any pulse shorter than 2/fc [s]

is regarded as noise and

removed. Pulses not shorter

than 7/fc [s] are definitely

regarded as signals.

INT2

P53/TC1/ SCK1 /

AIN0/ KWU0

IMF·EF7 = 1

Falling edge or

rising edge

Pulses of less than 7/fc [s] are

eliminated as noise. Pulses

equal to or more than 25/fc [s]

are regarded as signals.

INT3

P30/RXIN

IMF·EF11 = 1

Falling edge,

rising edge or

falling/rising edge

Refer to the section of the

remote control preprocessor

INT4

P31/TC3

IMF·EF12 = 1

Falling edge or

rising edge

Pulses of less than 7/fc [s] are

eliminated as noise. Pulses of

25/fc [s] or more are

considered to be signals.

INT5

P20/ STOP

IMF·EF15 = 1

Falling edge

Any pulse shorter than 2/fc [s]

is regarded as noise and

removed. Pulses not shorter

than 7/fc [s] are definitely

regarded as signals.

Note 1: The noise rejection function is also affected for timer counter input 1 (TC1 pin).

Note 2: If a noiseless signal is input to the external interrupt pin in the NORMAL or IDLE mode, the maximum

time from the edge of input signal until the IL is set is as follows:

(1) INT2, INT4 pin 31/fc [s]

(2) INT3 pin

Refer to the section of the remote control preprocessor.

Note 3: If a dual-function pin is used as an output port, changing data or switching between input and output

generates a pseudo interrupt request signal. To ignore this signal, it is necessary to reset the interrupt

enable flag.

Note 4: If INT0EN

= “0”, detecting the falling edge of the INT0 pin input does not set the interrupt latch IL3.

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